I already have a fully-built health and wellness app and now need an experienced engineer to wire in a new SDK that will handle health-data synchronisation. The SDK file is ready for you to inspect; what I need is clean, production-ready code that lets users sync Step count, Heart rate and Calorie burn seamlessly across both iOS and Android builds. Here’s how I see the flow: you review the SDK documentation, plan the best way to surface the sync endpoints in our existing architecture, build the bridge layer for iOS (Swift) and Android (Kotlin/Java), then hand back a tested, merge-ready pull request along with brief implementation notes. I’ll provide the repo, the current data models and access to our staging API as soon as we start. Please have proven experience integrating third-party SDKs into live apps; this is critical because I don’t have bandwidth for a learning curve on this part of the project. Key deliverables • End-to-end health-data sync for Step count, Heart rate and Calorie burn on both platforms • All compile-time errors resolved and unit/instrumentation tests passing • Short read-me covering setup, key classes and any new build-gradle / Podfile entries If that matches your skillset, let’s get moving.